DE102014202358B4 - Optimierung von Rephasierungs-Gradientenpulsen bei einer simultanen MR-Anregung mehrerer Schichten - Google Patents

Optimierung von Rephasierungs-Gradientenpulsen bei einer simultanen MR-Anregung mehrerer Schichten Download PDF

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DE102014202358B4
DE102014202358B4 DE102014202358.0A DE102014202358A DE102014202358B4 DE 102014202358 B4 DE102014202358 B4 DE 102014202358B4 DE 102014202358 A DE102014202358 A DE 102014202358A DE 102014202358 B4 DE102014202358 B4 DE 102014202358B4
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pulse
excitation
gradient
magnetic resonance
slice selection
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DE102014202358A1 (de
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Peter Speier
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Siemens Healthineers Ag De
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Siemens Healthcare GmbH
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Priority to CN201510063575.2A priority patent/CN104833931B/zh
Priority to KR1020150018604A priority patent/KR101865247B1/ko
Priority to US14/618,433 priority patent/US10048346B2/en
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    • G—PHYSICS
    • G01—MEASURING; TESTING
    • G01R—MEASURING ELECTRIC VARIABLES; MEASURING MAGNETIC VARIABLES
    • G01R33/00—Arrangements or instruments for measuring magnetic variables
    • G01R33/20—Arrangements or instruments for measuring magnetic variables involving magnetic resonance
    • G01R33/44—Arrangements or instruments for measuring magnetic variables involving magnetic resonance using nuclear magnetic resonance [NMR]
    • G01R33/48—NMR imaging systems
    • G01R33/54—Signal processing systems, e.g. using pulse sequences ; Generation or control of pulse sequences; Operator console
    • G01R33/56—Image enhancement or correction, e.g. subtraction or averaging techniques, e.g. improvement of signal-to-noise ratio and resolution
    • G01R33/565—Correction of image distortions, e.g. due to magnetic field inhomogeneities
    • G01R33/56518—Correction of image distortions, e.g. due to magnetic field inhomogeneities due to eddy currents, e.g. caused by switching of the gradient magnetic field
    • G—PHYSICS
    • G01—MEASURING; TESTING
    • G01R—MEASURING ELECTRIC VARIABLES; MEASURING MAGNETIC VARIABLES
    • G01R33/00—Arrangements or instruments for measuring magnetic variables
    • G01R33/20—Arrangements or instruments for measuring magnetic variables involving magnetic resonance
    • G01R33/28—Details of apparatus provided for in groups G01R33/44 - G01R33/64
    • G01R33/32—Excitation or detection systems, e.g. using radio frequency signals
    • G01R33/34—Constructional details, e.g. resonators, specially adapted to MR
    • G01R33/34092—RF coils specially adapted for NMR spectrometers
    • G—PHYSICS
    • G01—MEASURING; TESTING
    • G01R—MEASURING ELECTRIC VARIABLES; MEASURING MAGNETIC VARIABLES
    • G01R33/00—Arrangements or instruments for measuring magnetic variables
    • G01R33/20—Arrangements or instruments for measuring magnetic variables involving magnetic resonance
    • G01R33/44—Arrangements or instruments for measuring magnetic variables involving magnetic resonance using nuclear magnetic resonance [NMR]
    • G01R33/443—Assessment of an electric or a magnetic field, e.g. spatial mapping, determination of a B0 drift or dosimetry
    • G—PHYSICS
    • G01—MEASURING; TESTING
    • G01R—MEASURING ELECTRIC VARIABLES; MEASURING MAGNETIC VARIABLES
    • G01R33/00—Arrangements or instruments for measuring magnetic variables
    • G01R33/20—Arrangements or instruments for measuring magnetic variables involving magnetic resonance
    • G01R33/44—Arrangements or instruments for measuring magnetic variables involving magnetic resonance using nuclear magnetic resonance [NMR]
    • G01R33/48—NMR imaging systems
    • G01R33/483—NMR imaging systems with selection of signals or spectra from particular regions of the volume, e.g. in vivo spectroscopy
    • G01R33/4833—NMR imaging systems with selection of signals or spectra from particular regions of the volume, e.g. in vivo spectroscopy using spatially selective excitation of the volume of interest, e.g. selecting non-orthogonal or inclined slices
    • G01R33/4835—NMR imaging systems with selection of signals or spectra from particular regions of the volume, e.g. in vivo spectroscopy using spatially selective excitation of the volume of interest, e.g. selecting non-orthogonal or inclined slices of multiple slices
    • G—PHYSICS
    • G01—MEASURING; TESTING
    • G01R—MEASURING ELECTRIC VARIABLES; MEASURING MAGNETIC VARIABLES
    • G01R33/00—Arrangements or instruments for measuring magnetic variables
    • G01R33/20—Arrangements or instruments for measuring magnetic variables involving magnetic resonance
    • G01R33/44—Arrangements or instruments for measuring magnetic variables involving magnetic resonance using nuclear magnetic resonance [NMR]
    • G01R33/48—NMR imaging systems
    • G01R33/54—Signal processing systems, e.g. using pulse sequences ; Generation or control of pulse sequences; Operator console
    • G01R33/543—Control of the operation of the MR system, e.g. setting of acquisition parameters prior to or during MR data acquisition, dynamic shimming, use of one or more scout images for scan plane prescription
    • G—PHYSICS
    • G01—MEASURING; TESTING
    • G01R—MEASURING ELECTRIC VARIABLES; MEASURING MAGNETIC VARIABLES
    • G01R33/00—Arrangements or instruments for measuring magnetic variables
    • G01R33/20—Arrangements or instruments for measuring magnetic variables involving magnetic resonance
    • G01R33/44—Arrangements or instruments for measuring magnetic variables involving magnetic resonance using nuclear magnetic resonance [NMR]
    • G01R33/48—NMR imaging systems
    • G01R33/54—Signal processing systems, e.g. using pulse sequences ; Generation or control of pulse sequences; Operator console
    • G01R33/546—Interface between the MR system and the user, e.g. for controlling the operation of the MR system or for the design of pulse sequences
    • G—PHYSICS
    • G01—MEASURING; TESTING
    • G01R—MEASURING ELECTRIC VARIABLES; MEASURING MAGNETIC VARIABLES
    • G01R33/00—Arrangements or instruments for measuring magnetic variables
    • G01R33/20—Arrangements or instruments for measuring magnetic variables involving magnetic resonance
    • G01R33/44—Arrangements or instruments for measuring magnetic variables involving magnetic resonance using nuclear magnetic resonance [NMR]
    • G01R33/48—NMR imaging systems
    • G01R33/54—Signal processing systems, e.g. using pulse sequences ; Generation or control of pulse sequences; Operator console
    • G01R33/56—Image enhancement or correction, e.g. subtraction or averaging techniques, e.g. improvement of signal-to-noise ratio and resolution
    • G01R33/561—Image enhancement or correction, e.g. subtraction or averaging techniques, e.g. improvement of signal-to-noise ratio and resolution by reduction of the scanning time, i.e. fast acquiring systems, e.g. using echo-planar pulse sequences
    • G01R33/5611—Parallel magnetic resonance imaging, e.g. sensitivity encoding [SENSE], simultaneous acquisition of spatial harmonics [SMASH], unaliasing by Fourier encoding of the overlaps using the temporal dimension [UNFOLD], k-t-broad-use linear acquisition speed-up technique [k-t-BLAST], k-t-SENSE
    • G01R33/5612—Parallel RF transmission, i.e. RF pulse transmission using a plurality of independent transmission channels
    • G—PHYSICS
    • G01—MEASURING; TESTING
    • G01R—MEASURING ELECTRIC VARIABLES; MEASURING MAGNETIC VARIABLES
    • G01R33/00—Arrangements or instruments for measuring magnetic variables
    • G01R33/20—Arrangements or instruments for measuring magnetic variables involving magnetic resonance
    • G01R33/44—Arrangements or instruments for measuring magnetic variables involving magnetic resonance using nuclear magnetic resonance [NMR]
    • G01R33/48—NMR imaging systems
    • G01R33/54—Signal processing systems, e.g. using pulse sequences ; Generation or control of pulse sequences; Operator console
    • G01R33/56—Image enhancement or correction, e.g. subtraction or averaging techniques, e.g. improvement of signal-to-noise ratio and resolution
    • G01R33/561—Image enhancement or correction, e.g. subtraction or averaging techniques, e.g. improvement of signal-to-noise ratio and resolution by reduction of the scanning time, i.e. fast acquiring systems, e.g. using echo-planar pulse sequences
    • G01R33/5613—Generating steady state signals, e.g. low flip angle sequences [FLASH]
    • G01R33/5614—Generating steady state signals, e.g. low flip angle sequences [FLASH] using a fully balanced steady-state free precession [bSSFP] pulse sequence, e.g. trueFISP
    • G—PHYSICS
    • G01—MEASURING; TESTING
    • G01R—MEASURING ELECTRIC VARIABLES; MEASURING MAGNETIC VARIABLES
    • G01R33/00—Arrangements or instruments for measuring magnetic variables
    • G01R33/20—Arrangements or instruments for measuring magnetic variables involving magnetic resonance
    • G01R33/44—Arrangements or instruments for measuring magnetic variables involving magnetic resonance using nuclear magnetic resonance [NMR]
    • G01R33/48—NMR imaging systems
    • G01R33/54—Signal processing systems, e.g. using pulse sequences ; Generation or control of pulse sequences; Operator console
    • G01R33/56—Image enhancement or correction, e.g. subtraction or averaging techniques, e.g. improvement of signal-to-noise ratio and resolution
    • G01R33/561—Image enhancement or correction, e.g. subtraction or averaging techniques, e.g. improvement of signal-to-noise ratio and resolution by reduction of the scanning time, i.e. fast acquiring systems, e.g. using echo-planar pulse sequences
    • G01R33/5611—Parallel magnetic resonance imaging, e.g. sensitivity encoding [SENSE], simultaneous acquisition of spatial harmonics [SMASH], unaliasing by Fourier encoding of the overlaps using the temporal dimension [UNFOLD], k-t-broad-use linear acquisition speed-up technique [k-t-BLAST], k-t-SENSE

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  • Condensed Matter Physics & Semiconductors (AREA)
  • High Energy & Nuclear Physics (AREA)
  • Engineering & Computer Science (AREA)
  • Health & Medical Sciences (AREA)
  • Signal Processing (AREA)
  • Nuclear Medicine, Radiotherapy & Molecular Imaging (AREA)
  • Radiology & Medical Imaging (AREA)
  • General Health & Medical Sciences (AREA)
  • Life Sciences & Earth Sciences (AREA)
  • Optics & Photonics (AREA)
  • Spectroscopy & Molecular Physics (AREA)
  • Magnetic Resonance Imaging Apparatus (AREA)
  • Biophysics (AREA)
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  • Heart & Thoracic Surgery (AREA)
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DE102014202358.0A 2014-02-10 2014-02-10 Optimierung von Rephasierungs-Gradientenpulsen bei einer simultanen MR-Anregung mehrerer Schichten Active DE102014202358B4 (de)

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Application Number Priority Date Filing Date Title
DE102014202358.0A DE102014202358B4 (de) 2014-02-10 2014-02-10 Optimierung von Rephasierungs-Gradientenpulsen bei einer simultanen MR-Anregung mehrerer Schichten
CN201510063575.2A CN104833931B (zh) 2014-02-10 2015-02-06 用于控制磁共振成像系统的方法和装置
KR1020150018604A KR101865247B1 (ko) 2014-02-10 2015-02-06 자기 공명 영상 시스템 제어 방법 및 장치
US14/618,433 US10048346B2 (en) 2014-02-10 2015-02-10 Method and device for controlling a magnetic resonance imaging system

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DE102014202358.0A DE102014202358B4 (de) 2014-02-10 2014-02-10 Optimierung von Rephasierungs-Gradientenpulsen bei einer simultanen MR-Anregung mehrerer Schichten

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DE102014202358A1 DE102014202358A1 (de) 2015-08-13
DE102014202358B4 true DE102014202358B4 (de) 2016-07-21

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US (1) US10048346B2 (ko)
KR (1) KR101865247B1 (ko)
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DE102015207591A1 (de) * 2015-04-24 2016-10-27 Siemens Healthcare Gmbh Verfahren zu einer Bewegungskorrektur von Magnetresonanz-Messdaten
DE102015221888B4 (de) * 2015-11-06 2017-10-19 Siemens Healthcare Gmbh Gleichzeitige MRT-Mehrschichtmessung
DE102015224054B4 (de) * 2015-12-02 2017-11-23 Julius-Maximilians-Universität Würzburg Modifizierte TrueFISP-Sequenz zur parallelen MR-Daten-Erfassung
US10267883B2 (en) 2015-12-11 2019-04-23 Siemens Healthcare Gmbh System and method for motion resolved MRI
CN105717471B (zh) * 2016-02-03 2018-05-11 惠仁望都医疗设备科技有限公司 一种磁共振射频激发能量自动校正的方法
DE102016211032A1 (de) * 2016-06-21 2017-12-21 Siemens Healthcare Gmbh Verfahren zur Aufnahme von Magnetresonanzdaten unter Verwendung einer bSSFP-Sequenz mit einer Magnetresonanzeinrichtung und Magnetresonanzeinrichtung
DE102016212632A1 (de) 2016-07-12 2018-01-18 Siemens Healthcare Gmbh Reduzierung von Artefakten in der Magnetresonanztechnik
DE102017201157B4 (de) * 2017-01-25 2019-02-14 Siemens Healthcare Gmbh Spin-Echo-Sequenz zum räumlich selektiven Erfassen von MR-Daten
US10564243B2 (en) * 2017-04-07 2020-02-18 Case Western Reserve University System and method for phase cycling magnetic resonance fingerprinting (phc-MRF)
US10481232B2 (en) 2017-04-13 2019-11-19 Canon Medical Systems Corporation Magnetic resonance imaging apparatus and magnetic resonance imaging method
DE102017220697A1 (de) * 2017-11-20 2019-05-23 Siemens Healthcare Gmbh Verfahren zum Betreiben einer MRT-Anlage und MRT-Anlage
US10823806B2 (en) * 2017-11-22 2020-11-03 Siemens Healthcare Gmbh Magnetic resonance imaging using dataset undersampling
EP3550318A1 (de) * 2018-04-06 2019-10-09 Siemens Healthcare GmbH Verfahren zur erzeugung einer b0-karte mittels eines magnetresonanz-fingerabdruckverfahrens
CN108957375B (zh) * 2018-07-23 2020-12-22 深圳先进技术研究院 磁共振成像方法、装置、设备及存储介质
CN109765513B (zh) * 2019-02-12 2021-05-18 上海联影医疗科技股份有限公司 用于产生磁共振场图的方法、装置及计算机设备
CN109917315B (zh) * 2019-04-30 2021-09-28 上海联影医疗科技股份有限公司 磁共振成像扫描方法、装置、计算机设备和存储介质
DE102019207558A1 (de) * 2019-05-23 2020-11-26 Siemens Healthcare Gmbh Verfahren zur Aufnahme von Magnetresonanzdaten, Magnetresonanzeinrichtung, Computerprogramm und elektronisch lesbarer Datenträger
CN112834968A (zh) * 2019-11-25 2021-05-25 通用电气精准医疗有限责任公司 用于磁共振成像系统的扫描控制系统及方法
DE102020209382A1 (de) * 2020-07-24 2022-01-27 Siemens Healthcare Gmbh Verfahren zur Aufnahme von Messdaten mittels einer Magnetresonanzanlage mit einer Korrektur der verwendeten k-Raumtrajektorien
WO2022236171A1 (en) * 2021-05-07 2022-11-10 The United States Of America, As Represented By The Secretary, Department Of Health And Human Services Method of improving uniformity of magnetization and magnetic resonance images at high static fields

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KR20150094528A (ko) 2015-08-19
CN104833931A (zh) 2015-08-12
DE102014202358A1 (de) 2015-08-13
US20150226823A1 (en) 2015-08-13
KR101865247B1 (ko) 2018-06-08
CN104833931B (zh) 2018-02-16
US10048346B2 (en) 2018-08-14

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